Vulnerability · Published Feb 4, 2022 · Assigned by talos

CVE-2021-21964

High 8.6

In plain English

A high-severity improper access control in Sealevel. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).

Severity (CVSS 3.0)8.6High

Exploit odds (30 days)0.7%top 46.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A denial of service vulnerability exists in the Modbus configuration functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. Specially-crafted network packets can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Affected products (as reported)

Vendor	Product	Versions
n/a	Sealevel	Sealevel Systems, Inc. SeaConnect 370W v1.3.34

Weakness: CWE-284 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1392 x_refsource_MISC